503807
Fig. 8. Convergence panel
Static convergence
1.
Connect a "cross-hatch" generator to the appropriate aerial
socket, adjusting the tuning of the generator and/or the set to
obtain sharp clearly defined vertical lines.
2.
Switch on the red and green guns only (depress switch 17)
and, keeping the brightness level fairly low, adjust the red and green
static shift magnets (see Fig. 7) to superimpose the red and green
lines at the centre of the screen only.
3.
Switch on the blue gun (depress switch 17 again) and adjust the
blue static shift magnet to superimpose the horizontal blue lines
on the red/green lines at the centre of the screen only.
4.
Adjust the blue lateral shift magnet to superimpose the vertical
blue lines at the centre of the screen only. At this point it is
advisable to re-check red purity. If it has been affected, the purity and
static convergence adjustments must be repeated.
Dynamic convergence
During dynamic convergence, readjust static convergence as
necessary, to converge parallel lines.
1.
Switch off blue gun (depress button 17).
2.
Converge the centre vertical lines with controls (1) and (2).
3.
Converge the centre horizontal lines with control (9) and the
R/G crossover coil L1523 (see Fig. 5). Caution: The solder
tags on L1523 are at H.T. potential.
4.
Converge the horizontal lines at the bottom of the screen with
control (3) and the horizontal lines at the top of the screen
with control (4).
5.
With controls (7) and (8), converge the left and right-hand
vertical lines.
6.
Check static convergence and readjust if necessary.
7.
Switch on the blue gun (depress button (17) again).
8.
Adjust controls (10), (11) and (12) to make the blue
horizontal lines straight and parallel with the red/green
lines.
9.
With control (5), superimpose the blue horizontal lines at the
bottom of the screen on the red/green lines.
10.
With control (6), superimpose the blue horizontal lines at the
top of the screen on the red/green lines.
11.
Adjust control (13) to superimpose the blue vertical lines on the
red/green lines at both sides of the screen. If correct conver-
gence cannot be obtained, the plugged leads to the blue lateral
shift assembly should be reversed. The need for this will be
indicated if rotation of control (13) produces a greater error.
12.
Adjust the blue static and lateral magnets where necessary to
superimpose the blue lines on the red/green lines.
13.
Recheck static convergence and purity. If the purity has been
affected, it will be necessary to repeat purity, static and
dynamic convergence adjustments.
R
U
BIN
G .
FIELD CONVERGENCE
LINE CONVERGENCE
Switch off Blue Gun
0 0
0 0
Switch on Blue Gun
0 0
GREY SCALE SETTING
0
(1)
COLOUR ON -OFF
0
0
Summary of Contents for G22K511
Page 3: ...G22K511 G25K512 Page Two ...
Page 12: ...Page Ten ...
Page 14: ...Page Eleven ...
Page 19: ...Page Fifteen ...